View source for Glottis

{{Infobox Anatomy |
  Name         = {{PAGENAME}} |
  Latin        = |
  GraySubject  = |
  GrayPage     = |
  Image        = Arytenoid cartilage.png |
  Caption      = Arytenoid cartilage |
  Image2       = Glottis positions.png |
  Caption2     = Glottis positions |
  Precursor    = |
  System       = |
  Artery       = |
  Vein         = |
  Nerve        = |
  Lymph        = |
  MeshName     = Glottis |
  MeshNumber   = A04.329.364 |
  DorlandsPre  = g_08 |
  DorlandsSuf  = 12395255  |
}}
{{SI}}


The space between the [[vocal cords]] is called the '''glottis'''. 

==Function==
As the vocal cords vibrate, the resulting vibration produces a "buzzing" quality to the speech, called '''voice''' or '''voicing'''. 

Sound production involving only the glottis is called ''glottal''. English has a [[voiceless glottal fricative]] spelled "h". In many accents of English the [[glottal stop]] (made by pressing the folds together) is used as a variant [[allophone]] of the phoneme {{IPA|/t/}} (and in some dialects, occasionally of {{IPA|/k/}} and {{IPA|/p/}}); in some languages, this sound is a [[phoneme]] of its own.

Skilled players of the Australian [[didgeridoo]] restrict their glottal opening in order to produce the full range of timbres available on the instrument. 
<ref>See "Acoustics:  The vocal tract and the sound of a didgeridoo", by Tarnopolsky et al. in Nature 436, 39 ([[7 July]] [[2005]]))</ref>

The vibration produced is an essential component of ''voiced'' [[consonant]]s as well as [[vowel]]s. If the vocal folds are drawn apart, air flows between them causing no vibration, as in the production of voiceless consonants. 

*Voiced consonants include {{IPA|/w/, /v/, /z/, /&#658;/, /&#676;/, /&#240;/, /b/, /d/, and /g/.}}
*Voiceless consonants include {{IPA|/h/, /&#653;/, /f/, /s/, /&#643;/, /&#679;/, /&#952;/, /p/, /t/, and /k/.}}

==Additional images==
<gallery>
 Image:Illu07 larynx01.jpg|Larynx
 Image:Gray955.png|The entrance to the larynx, viewed from behind.
 Image:Gray1204.png|The entrance to the larynx.
</gallery>

==See also==
*[[Phonation]]

==External links==
* {{eMedicineDictionary|Glottis}}

{{Neck general}}
[[Category:Phonetics]]
[[Category:Head and neck]]
[[Category:Human voice]]
[[Category:Respiratory system]]

==Notes==
<references />

== References of Glottis Simulator ==

de Menezes Lyra R. Glottis simulator. Anesth Analg. 1999 Jun;88(6):1422-3.[http://www.anesthesia-analgesia.org/cgi/reprint/88/6/1424.pdf]

Smith, N Ty. Simulation in anesthesia: the merits of large simulators versus small simulators. Current Opinion in Anaesthesiology. 13(6):659-665, December 2000.



[[ca:Glotis]]
[[de:Glottis]]
[[es:Glotis]]
[[eo:Gloto]]
[[fr:Glotte]]
[[gl:Glote]]
[[it:Glottide]]
[[ko:성문 (몸)]]
[[nl:Glottis]]
[[pl:Głośnia]]
[[pt:Glote]]
[[fi:Äänirako]]
[[sv:Röstspringa]]
[[zh:声门]]

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